80 results about "Water aeration" patented technology

The invention relates to a subsurface flow constructed wetland sewage treatment system by drop water aeration oxygenation, composed of drop water aeration subsurface flow constructed wetlands in one stage or multistage series. Each stage of drop water aeration subsurface flow constructed wetland comprises a bed body, an inflow barricade, an outlet barricade and a drop water baffle; wherein a plurality of deflectors, gravel fillers and emergent aquatic plants are arranged in the bed body between the inflow barricade and the outlet barricade. The invention is even in water distribution, small inwake space and uniform in water impact, residence time of sewage in the bed body is extended, blocking is difficult, thus being beneficial to improving effluent quality and biodegradation of microorganism on nutrient such as nitrogen, phosphor and the like in the sewage, and construction and running cost is low. The invention, under the joint action of the effects, can effectively degrade pollutant of urban and town domestic sewage, a small amount of industry waste water and farm drainage and is applicable to mountain land and hilly country with certain gradient.

The Hand Held Sanitary Washer provides a mechanism to deliver soap, water or a soap and water mixture. Soap delivery is accomplished through a venture mechanism or through compressive means. A soap reservoir may be detachable or included within the sanitary washer handle. Water aeration diminishes splashing as well as aiding in the mixture of soap and water. The addition of temperature controlled water is provided for and various attachment means to existing plumbing facilities are provided.

A liquid feed line includes a stepped internal nozzle and an exit diameter smaller than the diameter of the liquid feed line. The stepped internal nozzle desirably introduces hydrodynamics or hydraulic waves for the fluid, with the number of steps selected based on the pressure of the motive flow. By limiting the length of the stepped internal nozzle cylinder, a desirable splayed liquid stream is formed within a mixing chamber in fluid communication with a vent line. An exit cylinder in fluid communication with the mixing chamber includes a channel through which an aerated liquid stream of fluid passes. The entrance and exit faces forming the channel are substantially perpendicular to the fluid flow with the channel having a generally uniform dimension, neither converging nor diverging, and a diameter 1 to 10 times greater, depending on the pressure of the motive flow, than the exit to the internal nozzle.

The invention discloses an apparatus for producing ozone water and hydrogen water at any time by using an ozone electrolysis generator. The apparatus comprises an ozone water mixing bucket (1), a pure water bucket (3), a pure water supply device (2), an ozone electrolysis generator (4), a circuit control board (7) and the like, and is characterized in that the ozone electrolysis generator (4) is connected with a hydrogen water mixing bucket (9), the hydrogen water mixing bucket (9) is connected with a water inlet (17) through a hydrogen water inlet electromagnetic valve (6), the hydrogen water mixing bucket (9) is connected with a hydrogen water aeration bucket (10), the ozone water mixing bucket (1) is connected with the water inlet (17) through an ozone water inlet electromagnetic valve (5), the ozone water mixing bucket (1) and an ozone water aeration bucket (11) are connected, and the ozone water aeration bucket (11) and the hydrogen water aeration bucket (10) are respectively connected with a sewage outlet (18) and a water outlet. The apparatus has characteristics of simple and practical structure, low cost, high efficiency, energy saving and convenient use, wherein high purity hydrogen produced by the ozone electrolysis generator is stored so as to produce hydrogen water at any time.

The invention relates to a view tower type device for water aeration and biological purification. The structure of the view tower type device is a tower type structure, and the device comprises a water outlet 1, a spill pit 2 and an outlet channel 5, wherein the water outlet 1 is formed at the center of the spill pit 2, and the outlet channel 5 is communicated with the water outlet 1; a plurality of functional layers are arranged to surround the spill pit 2, each functional layer comprises a biological ball purification region 3 and a landscape aquatic plant region 4, and the landscape aquatic plant region 4 is arranged to surround the biological ball purification region, one end of the spill pit 2 is connected with a water duct 7, and a water pump 6 is mounted at the other end of the water duct 7. The view tower type device has the advantages that the dissolved oxygen concentration in sewage is improved by virtue of free wall fall, and a biological enhanced treatment function is added so that the treatment efficiency of constructed wetlands can be improved obviously and the water quality of the sewage plant effluent can be improved. Compared with existing techniques, the landscape functions of the constructed wetlands are not damaged, and the landscape effect of the constructed wetlands and the sewage plants also are added. In addition, the view tower type device for water aeration and biological purification is simple in structure, low in construction cost and convenient to repair.

The invention discloses a carbon fiber-based mine wastewater treatment system and a groundwater decontamination process. The mine wastewater treatment system comprises a falling water aeration tank, a dosing tank, a primary sedimentation tank and multiple stages of carbon fiber contact oxidation tanks which are connected in series, wherein the falling water aeration tank, the dosing tank, the primary sedimentation tank and the carbon fiber contact oxidation tanks are connected sequentially, the dosing tank is used for adding a pH adjusting agent, the water inlet of the first-stage carbon fiber contact oxidation tank is connected with the water outlet of the primary sedimentation tank, and is provided with a decanter, and the water outlet of the last-stage carbon fiber contact oxidation tank is connected with a river channel or ditches; and the carbon fiber contact oxidation tanks are also provided with sludge discharge pipes and gates, each stage of the carbon fiber contact oxidation tanks is provided with a carbon fiber water purification system, and biofilm and algae fields which are formed by the carbon fiber water purification systems have the functions of retention, adsorption, adhesion, bridging, flocculation, bio-oxidation and bio-enzyme catalytic oxidation of wastewater. Iron manganese oxide which is a product of carbon fiber purification and treatment of wastewater is adopted as a catalyst, the operation cost is low, the decontamination effect is good, and the system is suitable for treatment of large-scale mine wastewater and groundwater sewage.

The aquaculture pond aeration system is essentially comprised of a “u” shaped conduit that extends below the pond bottom. A sparger assembly is positioned below the pond bottom in the outlet side of the conduit. The sparger emits air into the outlet side of the conduit thereby aerating the water and causing a hydrostatic pressure imbalance between the inlet side and the outlet side of the conduit. The pressure imbalance causes the pond water to circulate through the conduit and thereby aerate the aquaculture pond.

The invention discloses a sludge digestion liquid nitrogen removal and sludge stabilization device used in municipal wastewater treatment plants and a method. The device is provided with a digestion liquid tank, a nitration tank, an aerobic sedimentation tank, an effluent tank, a sludge stabilization tank, an anaerobic sedimentation tank, a middle water tank and a sludge tank. The method comprises the following steps: the system starts up; the sludge stabilization tank is filled with the water aeration tank effluent in the effluent tank; the mixture in the sludge stabilization tank enters the aerobic sedimentation tank for sludge-water separation; when the NO3- in the effluent of the sludge stabilization tank is more than -N which is more than 5 mg / L, the sludge is discharged; then newly deposited sludge is added, so that the sludge concentration MLSS can be maintained at 20-30 kg MLSS / m3. The device of the invention is suitable for municipal sludge disposal and has perfect structure and technology, high efficiency, good effect, as well as low equipment and operating costs.

An air injection system for aerating well water with a stream of air and having, a water circulation conduit extending down into the well, an aeration chamber extending upwardly within the well from the circulation conduit, at least one air and water discharge opening adjacent an upper end of the aeration chamber, a support disposed to support the aeration chamber at a predetermined depth in the well, and, an air compressor and a hose connected to supply air to a lower region of the aeration chamber, thus causing upward flow of air and water in the aeration chamber thereby inducing upward flow of water through said water circulation conduit from the bottom of the well to the aeration chamber.

The invention relates to the field of water aeration and water quality monitoring and discloses a moveable water aeration and water quality monitoring intelligent combined system. The system comprises at least one floating plate (1), wherein an aerator (7) is arranged at the lower end of the floating plate (1); a water quality monitoring device (3) is arranged on the floating plate (1); a solar charging device (4) is arranged on the floating plate (1); the water quality monitoring device (3) comprises a central processing unit (305) and a detection probe (309); the central processing unit (305) is connected with the detection probe (309); the detection probe (309) is used for detecting dissolved oxygen content of water and sending the dissolved oxygen content of water to the central processing unit (305); when the central processing unit (305) confirms that the dissolved oxygen content detected by the detection probe (309) is less than a preset value, the central processing unit (305) can send a signal to drive the aerator (7) to start up and then the aerator (7) can aerate in water. The moveable water aeration and water quality monitoring intelligent combined system has the effects of aerating according to the requirements, remotely monitoring water quality parameters, saving energy and protecting environment.

An improved aerator for creating gas-enriched water in aquaculture bodies of water, as well as other shallow ponds and lagoons, comprising a dual diffuser system providing for a large bubble water-mixing phase coupled with a small bubble water-aeration phase.

The invention relates to a high-iron, high-manganese and high-ammonia nitrogen underground water integral treatment apparatus and a method thereof, and belongs to the field of water supply purification. The problem of unable effective synergistic removal of iron, manganese and ammonia nitrogen of high-ammonia nitrogen underground water treatment, and the problems of low iron and manganese removal rate, long treatment process, long running cycle, complex running management and large investment due to unstable manganese removal when the ammonia nitrogen content is high are solved in the invention. The apparatus is composed of an underground water aeration tank, an integral two-stage filtration pot, an inlet water submersible pump, a filtration pot water inlet pipe, a filtration pot water outlet pipe, a backwashing pipe, a backwashing pump and a clear water tank. The method comprises the following steps: 1, starting a filter column; 2, culturing the filter column; and 3, carrying out an underground water treatment stage to complete efficient and stable purifying treatment of the high-iron, high-manganese and high-ammonia nitrogen underground water. The apparatus and the method have the advantages of simple process flow, small occupied area, strong impact resistance, low running cost, and high water yield; and the apparatus and the method allow the iron content, the manganese content and the ammonia nitrogen content of outlet water to be respectively reduced to 0.1mg / L, 0.05mg / L and 0.1mg / L or below.

The invention discloses a hot ventilation reinforced petroleum hydrocarbon contaminated soil in-situ remediation method which comprises the following steps: S1, determining the pollution range of a contaminated site and the concentration distribution of pollutants, and arranging an extraction well and an injection well; s2, performing soil vapor extraction remediation through a vacuum extraction system, and performing underground water aeration remediation and soil low-temperature thermal desorption in-situ remediation through a blast injection system; and S3, repeating the step S2 until the concentration of the pollutants in the contaminated site is reduced to 0.45%-5% of the original pollutant concentration, and completing in-situ remediation of the contaminated soil. According to the hot ventilation reinforced petroleum hydrocarbon contaminated soil in-situ remediation method provided by the invention, volatile and semi-volatile organic compounds in soil and underground water are removed in a manner of alternately operating SVE, AS and a hot air injection system for multiple times; the in-situ remediation technology has small disturbance on the site and is less affected by the ground, and the whole process has no secondary pollution.

The invention relates to a CH3NH2(g) waste gas treatment device, which comprises a waste gas adsorption oxidizer and a waste water aeration biological filter, wherein a waste gas washing dust removal region, a waste gas oxidization adsorption region, a waste gas basification adsorption region, a first defogging device, a waste gas acidification adsorption region and a second defogging device are sequentially arranged in the waste gas adsorption oxidizer in an upward direction from the bottom; the waste gas dust removal region is provided with a waste gas inlet; a gas flow guide pyrometric cone is arranged at the waste gas inlet position; the waste gas inlet communicates with a waste gas collection and conveying system through a pipeline; a waste gas outlet is formed above the waste gas second defogging device; the middle and upper part of the waste water aeration biological filter is of a cylindrical structure; the lower part of the waste water aeration biological filter is of a conical structure; the waste water aeration biological filter comprises a lower flow region, an upper flow region and a sludge region.

The water aeration capsules provide a quick and highly portable system for aerating polluted water. The capsules contain bubbles of air, oxygen, and / or other gas(es) surrounded by a water soluble shell or membrane of a suitable substance, e.g., various salts, sugars, water-soluble polymers, such as polyvinyl alcohol. The capsules are ballasted to make their specific gravity greater than the water they displace. The ballast may comprise any non-toxic metal, sand, clay, or other non-organic material, and / or fish bait or other food for aquatic animals. Magnetically attractive ballast elements may be provided, and a magnetic sheet may be placed on the bottom of a smaller body of water to enhance the settling of the capsules. Various means of dispensing the capsules from various mobile carriers are also disclosed, including dispensing by hand from shore or by a diver, from a small boat or larger ship, and / or from aircraft.

The invention discloses a device for supplying sterilized water to an ice making machine by utilizing an electrolytic ozone generator. The device comprises an ozone water mixing vat (1), a pure water vat (3), a pure water supplement device (2), an electrolytic ozone generator (4), a sewage discharge outlet (9), a water supply electromagnetic valve (5), an ozone water aeration vat (11), a reduction carbon vat (12) and the like, and is characterized in that the ozone water aeration vat (11) is connected with a water inlet (10-1) of the ice making machine (10) via an ozone water discharge electromagnetic valve (13); the water inlet (10-1) of the ice making machine (10) is connected with a water storage tank (10-3) of the ice making machine via a pipe line (10-2); a circuit control board (7) is connected with a power source (8), and is respectively connected with the electrolytic ozone generator (4), the water supply electromagnetic valve (5) and the ozone water discharge electromagnetic valve (13); the circuit control board (7) is connected with a main board (10-5) of the ice making machine (10) via a control signal wire (10-4) of the ice making machine. The device is simple in structure, practical, low in cost and excellent in sterilizing effect.

The invention provides an outdoor pond culture method for a hybrid grouper of Epinephelus lanceolatu (male) * Epinephelus fuscoguttatus (female). The method comprises the following steps: designing ofa culture pond into an inverted trapezoidal structure; complete discharging of water in the pond, full drying of the pond in the sun, dredging, disinfection with quicklime, and inlet water aeration and disinfection at least 10 days before larva entrance; selection of grouper larvae, and transportation of the grouper larvae by using a live fish transporter; stocking of the grouper larvae in the culture pond, and addition of an anti-stress medicament into the culture pond in advance; controlling of the pH value to be 7.8-8.6, the dissolved oxygen content to be greater than 5 mg / L, the ammonia nitrogen content to be less than 0.2 mg / L, the nitrite content to be less than 0.1 mg / L and the salinity to be 25-35 in the stocking process; regular feeding at a fixed point 1-2 times every day, wherein the daily feeding amount is 1-5% of the weight of the grouper larvae and regular water changing, wherein sewage within an area with an edge having a distance of 0.5-1 m to the bottom of the pond ischanged every day. The method adopts the outdoor pond to imitate wild culture, and shrimps and other types of fish are simultaneously cultured in the pond, so the culturing cost is reduced by at least 50%, and the market competitiveness is greatly improved.

The invention provides a novel industrialized circulating-water ecological breeding system for ponds. The novel industrialized circulating-water ecological breeding system comprises a breeding pool and a breeding tank. A cement wall is arranged in the middle of the breeding pool, and separates the breeding pool into a left plant purification area and a right filter-feeding fish breeding area. Thebreeding tank is located at one end of the cement wall. The functional areas of the system are obviously distributed, which is convenient for daily management; the entire breeding process can be monitored, and the problem of unobvious separation of functional areas of existing circulating-water ecological breeding systems in the ponds is solved; a water pushing system and an automatic aerator arearranged in a water inlet section of the breeding tank, and accordingly, water layer exchange, breeding water circulation and water aeration can be realized; breeding water is circulating water in thebreeding pool, is not discharged to the outside, and does not pollute the surrounding, so that ecological breeding is achieved truly; the problem of incomprehensive effect of the existing circulating-water ecological breeding systems in the ponds is solved.

The invention provides an ecological overtopping dam and a construction method thereof. Specifically, an impermeable or permeable overtopping dam core is built by using reinforced concrete, and the foundation of the dam core is embedded in the ground, thereby meeting the stability requirements of the ecological overtopping dam; and stone ripraps are piled at the two sides of the overtopping dam core on the ground, and the stone ripraps are covered with a wire box or continuously wedged into timber piles along two sidelines of the bottom margin of the overtopping dam, thereby meeting the stability conditions of the stone ripraps. Through the construction of the ecological overtopping dam, the effect of falling-water aeration can be improved, and a living / perching space can be provided for aquatic creatures, thereby improving the self cleaning capacity of water. The ecological overtopping dam and construction method thereof provided by the invention are simple and quick, low in cost, convenient in operation and maintenance and wide in application range, embody the concepts of contemporary near-natural water resource engineering, and can be applied to the construction on overtopping dams for rivers, reservoirs and scenic water.

The invention discloses an odontobutisobscura temperature-control flowing-water hatching method, and belongs to the technical field of fish-egg hatching. The method includes: fertilized eggs of the odontobutisobscura are obtained by means of an artificial fertilization method or a natural spawning method, the fertilized eggs of the odontobutisobscura obtained by means of the artificial fertilization method are unsticked, and the fertilized eggs of the odontobutisobscura obtained by means of the natural spawning method are fertilized eggmass which are delivered naturally by the odontobutisobscura and directly detached from an attachment by using a tool; a small amount of the fertilized eggs of the odontobutisobscura are extracted to be observed under a microscope to have growth periods of the fertilized eggs determined, a still water-changed method or a flowing water aeration method are adopted to hatch early embryo of archenteron, an up-flowing-water hatch method is adopted to hatch late embryo of the archenteron till the fertilized eggs detached from the attachment to hatch odontobutisobscura larva fishes; the odontobutisobscura larva fishes are collected prior to water operation in a seedling box made of silk cloth; and the larva fishes are introduced to a larva fish breeding pond after bladders appear on the larva fishes and summer flower seedings of the odontobutisobscura are obtained. By the temperature-control and the water-hatching method, the technical problem of easy mildew rot of the fertilized eggs of the odontobutis is solved, time for hatching is shortened, and hatching rate of the fertilized eggs is improved.

The invention discloses a method capable of rapidly measuring biochemical oxygen demand in water, which comprises dissolving anhydrous calcium chloride in water; dissolving ferric chloride in water; and dissolving glucose and glutamic acid in water after drying; Put a certain amount of water in the glass bottle, control the water temperature, aerate the water with an oil-free air compressor or membrane pump, take 100mL of neutralized water sample, add 1+1 acetic acid 10mL, 10% potassium iodide solution 1mL , using starch solution as indicator, titrate free iodine with sodium sulfite standard solution, and calculate the amount of sodium sulfite solution needed in the water sample according to the volume and concentration of sodium sulfite standard solution consumed; Inside, use the siphon method to add part of the dilution water, and then add the amount of water sample calculated according to the volume of the bottle and the dilution ratio. In the BOD5 measurement, the sodium azide correction method is used to measure the dissolved oxygen. The method has the advantages of simple and convenient measurement process, less procedures, accurate measurement results and high efficiency, and can meet the development needs of enterprises.

The invention discloses a matched double-layer propeller for water aeration and a method. The propeller comprises a hollow shaft and propeller blades. The propeller blades comprise a set of upper blades and a set of lower blades which are arranged in a staggered mode, the central lines of the blades are uniformly distributed at 45-90 degrees, the radius of the upper blades is equal to that of the lower blades, the number of the upper blades is equal to that of the lower blades, and the angle difference of the outlet parts of the upper blades and the lower blades is 10-15 degrees. Aeration pipes are welded to the upper blades and the lower blades in the rotation direction of the upper blades and the lower blades, and a plurality of aeration holes are formed in each aeration pipe. One end of each aeration pipe is communicated with the hollow shaft, and the rotation angle of the open part at the other end of each aeration pipe is 40-80 degrees. The diameter of the aeration pipes is 15-50 mm, the diameter of the aeration holes is 0.5-0.8 time that of the aeration pipes, and the interval between the aeration holes is 3-5 times the diameter of the aeration holes. Due to the arrangement of the multi-hole aeration pipes, the contact area of air and water is increased, the self-cleaning capacity of water is improved, and a significant improvement effect on the water ecological environment is achieved.

An embodiment of the invention provides floating comprehensive water treatment equipment which comprises a tank. The tank is defined or partially defined by a shell (2), a culture unit (3) and a treatment unit (5) are sequentially arranged in the tank, an aeration unit (4) is arranged at the bottom of the tank, the culture unit (3) is provided with biological fillers for culturing aerobic microorganisms, the treatment unit (5) is provided with biological walls with rotary structures, gas can be continuously supplied by the aeration unit (4) for the biological fillers of the culture unit (3), and the microorganisms on the biological walls of the treatment unit (5) can be regularly scraped and regenerated. The floating comprehensive water treatment equipment has the advantages that water treatment processes of microorganism culturing and capturing, water aeration and oxygen dissolving, biological flocculation, biological purification, biological filtration, physical filtration and the like can be integrated with one another, the floating comprehensive water treatment equipment is simple and compact in structure, convenient to manufacture, mount and maintain, low in energy consumption, high in energy efficiency ratio and wide in service range, and excellent water purification effects and landscape effects can be realized.

The invention discloses a temperature cycle test device of an aerated water rock. The temperature cycle test device of the aerated water rock comprises an insulation aerated water chamber and a water tank, wherein the insulation aerated water chamber is communicated with the water tank through a water injection pipe; the water injection pipe is provided with an inlet valve; the insulation aerated water chamber is provided with an air pipe and a cooling device for cooling air in the insulation aerated water chamber; the air pipe is connected with an air input pipe and a vacuum pump for vacuumizing the insulation aerated water chamber; the air input pipe is provided with an inlet valve; a test piece clamp for fixing a rock test piece in air is arranged in the insulation aerated water chamber; the bottom of the insulation aerated water chamber is connected with a drain pipe; the drain pipe is provided with a drain valve; a heating device for heating water in the water tank is arranged in the water tank. The temperature cycle test device of the aerated water rock can realize water aeration and real-time water replenishing, does not need to move rock test pieces, is simple in structure, convenient to use and low in production cost, and can be popularized and applied conveniently.

The invention discloses a soft material ecological culture system and method applied to a pond. The culture system comprises a culture tank arranged in the pond, an operation platform floating aroundthe culture tank, a gas stripping system and a culture water aeration system. The upper portion of the culture tank is a fish culture area (1), the bottom of the culture tank is a fecal collection area (2), and the fish culture area and the fecal collection area are separated by a grid plate (4); there is no need to construct a cement structure in the pond, a solid-liquid separator and a water pump are also not needed for use, and the equipment investment and operating cost are reduced. Culture solid particles collected by gas stripping can be used as agricultural fertilizer. Bacterial flocs entering the pond on the periphery of the culture tank can be directly eaten and used by other cultured animals to achieve reuse of culture wastes such as nitrogen, the culture cost is saved, and the culture benefit is increased.

An anaerobic biochemical pool for sewage treatment comprises a biochemical pool body, a water inlet pipe and a water outlet pipe, and an inverted wall and an overflow wall are arranged in the biochemical pool body close to the water inlet pipe and the water outlet pipe respectively; a plurality of rows of suspension type combined fiber bundle discs are arranged between the inverted wall and the overflow wall; a horizontally arranged reflux pipe network is arranged at the bottom in the biochemical pool body, and water aeration discs are uniformly distributed and connected below each main pipeline of the reflux pipe network; each water aeration disc comprises a central pipe, a conical mud breaking disc and a plurality of conical flow guide discs are sequentially arranged on the central pipe from top to bottom, the diameters of the plurality of flow guide discs are sequentially increased from top to bottom, and zigzag notches are uniformly distributed in the edge of a disc opening of each flow guide disc; and sawtooth-shaped convex teeth are arranged on the outer side disc surface of each mud breaking disc and are used for breaking larger activated sludge particles raised by reflux liquid into smaller particles. According to the biochemical pool, activated sludge deposited at the bottom of the anaerobic biochemical pool can be in a fluidized state without a plug-flow pump, the optimal treatment effect of anaerobic biochemistry is ensured, and wide popularization and application prospects are realized.

The water aeration capsules provide a quick and highly portable system for aerating polluted water. The capsules contain bubbles of air, oxygen, and / or other gas(es) surrounded by a water soluble membrane. The capsules are ballasted to sink. Magnetically attractive ballast elements may be provided, and a magnetic sheet may be placed on the bottom of a smaller body of water to enhance the settling of the capsules. The gas burial disposal capsules may be formed of non-degradable material for substantially permanent gas storage, or of degradable material to allow the gases to slowly permeate the surrounding earth for slow and relatively harmless release. The gas may be pressurized within the capsules to approximately the pressure of the surrounding earth.

The invention provides an air supplementing system of a high-velocity flow tunnel and a ventilating capacity control method thereof. The air supplementing system comprises a water aeration mitigationcavitation air supplementing facility, and an air supplementing facility which is dragged by high-velocity flow to take away air, wherein the water aeration mitigation cavitation air supplementing facility, and the air supplementing facility which is dragged by high-velocity flow to take away air are separated from each other and correspondingly communicate with outside atmosphere through relatedspecial air supplementing holes or air supplementing wells; the section area Ac of a hole top air supplementing channel of the air supplementing facility which is dragged by high-velocity flow to takeaway air is (18%-33%).Qw / Vc; if the air velocity of the hole top air supplementing channel is beyond a threshold value, a gate and a structure are easy to vibrate and generate harmful squeal, thus the section area Ac of the hole top air supplementing channel is to be adjusted until the air velocity is less than the threshold. With the adoption of the system, the water aeration mitigation cavitation effect of the high-velocity flow tunnel can be ensured, and the gate and structure can be effectively prevented from vibration and harmful squeal.

The invention provides a gasified grey water aeration hardness removal device, a treatment method and application. The gasified grey water aeration hardness removal device comprises a carbon dioxide aeration unit, a flocculating settling unit and a precipitation separation unit which are connected in sequence; the carbon dioxide aeration unit comprises a rotational flow aeration assembly. According to the device disclosed by the invention, gasified grey water is sequentially subjected to operations such as carbon dioxide aeration and flocculent precipitation, and particularly, the utilizationrate of carbon dioxide is increased by adopting the rotational flow aeration assembly, so that the hardness and turbidity of the gasified grey water are effectively reduced, suspended matters and thelike are removed, and therefore, the total hardness of effluent is not more than 300mg / L, the turbidity of the effluent is not more than 5NTU, and the content of the suspended matters is not more than20mg / L, the scaling and sewage blocking tendency of a gasified grey water gasification system is greatly reduced, and the long-period stable operation of the gasification system is realized. The device is high in hardness removal efficiency, small in sludge generation amount, high in automation degree, small in occupied area and suitable for treatment of various gasified grey water.